/*
 * Copyright 2020 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef SkottieVectorKeyframeAnimator_DEFINED
#define SkottieVectorKeyframeAnimator_DEFINED

#include "modules/skottie/src/animator/KeyframeAnimator.h"

#include <vector>

namespace skottie::internal {
class VectorAnimatorBuilder final : public AnimatorBuilder {
public:
    using VectorLenParser = bool (*)(const skjson::Value &, size_t *);
    using VectorDataParser = bool (*)(const skjson::Value &, size_t, float *);

    VectorAnimatorBuilder(std::vector<float> *, VectorLenParser, VectorDataParser);

    sk_sp<KeyframeAnimator> makeFromKeyframes(const AnimationBuilder &, const skjson::ArrayValue &) override;

    sk_sp<Animator> makeFromExpression(ExpressionManager &, const char *) override;

private:
    bool parseValue(const AnimationBuilder &, const skjson::Value &) const override;

    bool parseKFValue(const AnimationBuilder &, const skjson::ObjectValue &, const skjson::Value &,
        Keyframe::Value *) override;

    const VectorLenParser fParseLen;
    const VectorDataParser fParseData;

    std::vector<float> fStorage;
    size_t fVecLen,      // size of individual vector values we store
        fCurrentVec = 0; // vector value index being parsed (corresponding
                         // storage offset is fCurrentVec * fVecLen)
    std::vector<float> *fTarget;

    using INHERITED = AnimatorBuilder;
};
} // namespace skottie::internal

#endif // SkottieVectorKeyframeAnimator_DEFINED
